Crystals Materials
Er:YAG Crystals for aerospace, medical, and industrial applications
Er:YAG crystal is capable of stably emitting light at wavelengths of 1617 and 1645 nm, which can be resonantly pumped into the upper laser manifold at 1470 nm and 1532 nm. Er:YAG crystal is laser crystals that excite at 2940nm, which is the hydroxyl absorption peak and is strongly absorbed by biological tissues, and are used in oral surgery, dentistry, implant dentistry and ENT.
| Diameter | 2 mm~50 mm |
|---|---|
| Length | 5 mm~180 mm |
| Orientation | [111] or [100] < ± 0.5。 |
| Thickness/Diameter Tolerance | ±0.05 mm |
| Surface Quality | 10/5 S/D |
| Parallelism | < 10 arcsec |
| Perpendicularity | < 5 arcmin |
| Clear Aperture | > 90% |
| Wavefront Distortion | λ/10 @ 633 nm |
| Surface Flatness | < λ/10 @ 632.8 nm |
| Chamfer | < 0.1 mm @ 45° |
| Coating | AR/HR/PR coating upon customer's request |
| Damage Threshold | 750mW/cm2 at 1064 nm, TEM00, 10 ns, 10Hz |
| Chemical Formula | Er:Y3Al5O12 |
| Crystal Structure | cubic - la3d |
| Lattice Constant | 12.01 Å |
| Density | 4.56-5.11 g/cm3 |
| Melting Point | 1950°C |
| Thermal Conductivity | 0.14 W/m/K @25°C |
| Specific Heat | 0.59 J/g/K |
| Thermal Shock Resistance | 790 W/m |
| Thermal Expansion | 7.8 x 10-6·K-1 @25°C |
| Hardness | 8.5 (Mohs) |
| Young’s Modulus | 317 GPa |
| Shear Modulus | 54.66 GPa |
| Extinction Ratio | 30 dB |
| Poisson Ratio | 0.25 |
| Laser Transition | 4I11/2 → 4I13/2 (highly doped) 4I13/2 → 4I15/2 (low doped) |
| Laser Wavelength | 2940 nm (highly doped) 1645 nm (low doped) |
| Photon Energy | 6.75×10-20 J @2940 nm |
| Pump Absorption Band Width | 600~800 nm (highly doped) 1530 nm (low doped) |
| Damage Threshold | >500 MW/cm2 |
| Emission Cross Section | 3×10-20 cm2 |
| Fluorescence Lifetime | 0.23 ms (highly doped) 2~5 ms (low doped) |
| Refractive Index | 1.7838 @2940 nm |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
Anti-reflection coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
To inquiry or order a finished Er:YAG laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Er-dopant concentration, sizes, and coating. For special request,
please specify specification in details for evaluation and fabrication.
| Part Number | Face size | Length | Doping, atm.% | Coating |
|---|---|---|---|---|
| ER-YAG-001 | Φ3.0 mm | 60.0 mm | 50% | AR/AR@2940 nm |
| ER-YAG-002 | 5.0*5.0.0 mm | 3.0 mm | 0.15% | Uncoated |
| ER-YAG-003 | Φ10.0 mm | 160.0 mm | 50% | AR/AR@2940 nm |
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